CHG: Tested to unfold some loops inside the crypto1 implementation to see if it gener...

[proxmark3-svn] / client / nonce2key / crapto1.c

diff --git a/client/nonce2key/crapto1.c b/client/nonce2key/crapto1.c
index 6d2ae9af47a0c4dc6de3875ea844ed6e2ebb2f80..dfad1c4048507b67ae2d2c77afcfa8a312f9715c 100644 (file)
--- a/client/nonce2key/crapto1.c
+++ b/client/nonce2key/crapto1.c
@@ -405,18 +405,66 @@ void lfsr_rollback_bit(struct Crypto1State *s, uint32_t in, int fb)
  */\r
 void lfsr_rollback_byte(struct Crypto1State *s, uint32_t in, int fb)\r
 {\r
-       int i;\r
+/*     int i;\r
        for (i = 7; i >= 0; --i)\r
                lfsr_rollback_bit(s, BEBIT(in, i), fb);\r
+*/\r
+// unfold loop 20160112\r
+       lfsr_rollback_bit(s, BEBIT(in, 7), fb);\r
+       lfsr_rollback_bit(s, BEBIT(in, 6), fb);\r
+       lfsr_rollback_bit(s, BEBIT(in, 5), fb);\r
+       lfsr_rollback_bit(s, BEBIT(in, 4), fb);\r
+       lfsr_rollback_bit(s, BEBIT(in, 3), fb);\r
+       lfsr_rollback_bit(s, BEBIT(in, 2), fb);\r
+       lfsr_rollback_bit(s, BEBIT(in, 1), fb);\r
+       lfsr_rollback_bit(s, BEBIT(in, 0), fb);\r
 }\r
 /** lfsr_rollback_word\r
  * Rollback the shift register in order to get previous states\r
  */\r
 void lfsr_rollback_word(struct Crypto1State *s, uint32_t in, int fb)\r
 {\r
+/*\r
        int i;\r
        for (i = 31; i >= 0; --i)\r
                lfsr_rollback_bit(s, BEBIT(in, i), fb);\r
+*/\r
+// unfold loop 20160112\r
+       lfsr_rollback_bit(s, BEBIT(in, 31), fb);\r
+       lfsr_rollback_bit(s, BEBIT(in, 30), fb);\r
+       lfsr_rollback_bit(s, BEBIT(in, 29), fb);\r
+       lfsr_rollback_bit(s, BEBIT(in, 28), fb);\r
+       lfsr_rollback_bit(s, BEBIT(in, 27), fb);\r
+       lfsr_rollback_bit(s, BEBIT(in, 26), fb);\r
+       lfsr_rollback_bit(s, BEBIT(in, 25), fb);\r
+       lfsr_rollback_bit(s, BEBIT(in, 24), fb);\r
+\r
+       lfsr_rollback_bit(s, BEBIT(in, 23), fb);\r
+       lfsr_rollback_bit(s, BEBIT(in, 22), fb);\r
+       lfsr_rollback_bit(s, BEBIT(in, 21), fb);\r
+       lfsr_rollback_bit(s, BEBIT(in, 20), fb);\r
+       lfsr_rollback_bit(s, BEBIT(in, 19), fb);\r
+       lfsr_rollback_bit(s, BEBIT(in, 18), fb);\r
+       lfsr_rollback_bit(s, BEBIT(in, 17), fb);\r
+       lfsr_rollback_bit(s, BEBIT(in, 16), fb);\r
+\r
+       lfsr_rollback_bit(s, BEBIT(in, 15), fb);\r
+       lfsr_rollback_bit(s, BEBIT(in, 14), fb);\r
+       lfsr_rollback_bit(s, BEBIT(in, 13), fb);\r
+       lfsr_rollback_bit(s, BEBIT(in, 12), fb);\r
+       lfsr_rollback_bit(s, BEBIT(in, 11), fb);\r
+       lfsr_rollback_bit(s, BEBIT(in, 10), fb);\r
+       lfsr_rollback_bit(s, BEBIT(in, 9), fb);\r
+       lfsr_rollback_bit(s, BEBIT(in, 8), fb);\r
+\r
+       lfsr_rollback_bit(s, BEBIT(in, 7), fb);\r
+       lfsr_rollback_bit(s, BEBIT(in, 6), fb);\r
+       lfsr_rollback_bit(s, BEBIT(in, 5), fb);\r
+       lfsr_rollback_bit(s, BEBIT(in, 4), fb);\r
+       lfsr_rollback_bit(s, BEBIT(in, 3), fb);\r
+       lfsr_rollback_bit(s, BEBIT(in, 2), fb);\r
+       lfsr_rollback_bit(s, BEBIT(in, 1), fb);\r
+       lfsr_rollback_bit(s, BEBIT(in, 0), fb);\r
 }\r
 \r
 /** nonce_distance\r